Central Arizona DX Association


Awards Banquet

Thank you to Bill, W7EXG, for sharing his wealth of knowledge about the characteristics of gray line propagation.  Many of us have heard about or experienced "long path" contacts around our local sunrise and sunset or heard the sudden amplification of a DX signal at their sunrise. 

Bill collected data from Tucson stations about the impact of gray line propagation during the 2016 Heard Island DXpedition to document that this phenomenon really exists.  It was clear that 40 meter long path was the best chance for Tucson stations to contact this rare DX island.

Bill took the time to research the existing literature on this subject and added his own observations with an engineer's analysis to better document this unique aspect of DXing.

We appreciated Bill's willingness to travel from Tucson to make this enlightening presentation. 

From DX Heat


President's Message

Dec. Meeting Recap

Welcome to the Central Arizona DX Association

Announced DX Operations
by NG3K

CADXA Repeater
Join us on the K5VT repeater to announce and discuss DX. 

It is open to all DX enthusiasts. 
147.32 MHz (+) no PL tone

Courtesy of The Daily DX™

Current Solar Data


We are the largest ham radio DX club in Arizona with over 140 members, many of whom are on the ARRL's DXCC Honor Roll.  We have several members who have traveled to distant places to put "rare" countries on the air.  We encourage any ham interested in DXing to join our club and learn about the many aspects of talking to hams around the globe who share this amazing hobby with us.  Founded in 1974, we are an ARRL-affiliated club and a member club of the Amateur Radio Council of Arizona (ARCA).

Our next meeting will be the Annual Awards Banquet on Sunday night, January 22nd, at the PERA Club.  You won't want to miss the program featuring our NPOTA superstars, Ingrid and Reinhard, W7ISG and K7RGG.  They traveled to more national parks in one year than most of us will see in a lifetime.

The no-host bar opens at 5:00 pm with a buffet-style dinner served around 6:00 pm.  There will be plenty of raffle prizes for members and guests.

Reservations are required and $30 per person must be paid in advance to Alton Chaney, W7ACX, club Treasurer, so we can provide an accurate headcount to the PERA Club.

As 2016 comes to a close, DXers have challenging times ahead as we must contend with a solar cycle minimum.  The HF bands are increasingly stingy with their openings to Europe and Asia, but we are seeing more opportunities to work DX on the LF bands (40-160meters).  As our November meeting speaker pointed out with his data, we need to pay particular attention to the gray line propagation available around our sunrise and sunset times each day to take advantage of LF DXing opportunities.

November was an exciting month for me because I was DX again for the first time in several years on the team of five Voodudes at PZ5A.  Being at the other end of the DX pile-ups is both fun and challenging at the same time.  The din from dozens or hundreds of stations calling simultaneously on CW, RTTY, or Phone taxes a DX operator's abilities no matter how many times the operator has experienced it.  The fun part is pulling out the familiar callsign of a CADXA member from back home and taking a moment to say "hi".

We weren't sure what to expect when we arrived in Suriname, but our host, Ramon, PZ5RA, made us part of his family for the week we lived and operated in his ham radio guest house.  His QTH is a ranch complete with chickens and goats.  We had all the fresh eggs we could eat and access to a local supermarket with most of the products we eat at home.  Our dinners had an Asian flare with plenty of rice, noodles, and tasty chicken.  The local beer was very enjoyable as well.  Our CQWW CW contest results exceeded our goals for contacts and multipliers.  It appears we will finish as the #5 Multi-2 station in the world.  We can live with that!

Let me take this opportunity to wish everyone a Happy Holiday Season.  Please take time to enjoy your family and friends and to be thankful for all the joy provided by our shared hobby. 


Lee, KY7M